<template>
    <div>
        <!-- 面包屑导航区域 -->
    <el-breadcrumb separator="/">
    <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
    <el-breadcrumb-item>用户管理</el-breadcrumb-item>
    <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

        <!-- 卡片视图区域 -->
        <el-card>
            <!-- 搜索与添加区域 -->
            <el-row :gutter="20">
            <el-col :span="8">
            <el-input placeholder="请输入内容"
            v-model="queryInfo.query"
            clearable
            @clear="getUserList">
            <el-button slot="append" icon="el-icon-search"
            @click="getUserList"></el-button>
            </el-input>
            </el-col>
            <el-col :span="4">
        <el-button type="primary" @click="addDialogVisible = true">添加用户</el-button>
    </el-col>
            </el-row>
            
            <!-- 用户列表区 -->
            <el-table :data="userlist" border stripe>
                <el-table-column type="index"></el-table-column>
                <el-table-column label="姓名" prop="username"></el-table-column>
                <el-table-column label="邮箱" prop="email"></el-table-column>
                <el-table-column label="电话" prop="mobile"></el-table-column>
                <el-table-column label="角色" prop="role_name"></el-table-column>
                <el-table-column label="状态" prop="mg_state">
                    <template slot-scope="scope">
                        <el-switch v-model="scope.row.mg_state"
                        @change="userStateChanged(scope.row)">
                        </el-switch>
                    </template>
                </el-table-column>
                <el-table-column label="操作" >
                    <template slot-scope="scope">
                        <!-- 修改按钮 -->
                        <el-button type="primary" icon="el-icon-edit" size="mini"
                        @click="showEditDialog(scope.row.id)"></el-button>
                        <!-- 删除按钮 -->
                        <el-button type="danger" icon="el-icon-delete" size="mini"
                        @click="removeUserById(scope.row.id)"></el-button>
                        <!-- 分配角色按钮 -->
                        <el-tooltip class="item" effect="dark" content="分配角色" placement="top" :enterable="false">
                        <el-button type="warning" icon="el-icon-setting" size="mini"
                        @click="setRole(scope.row)"></el-button>
                        </el-tooltip>
                    </template>
                </el-table-column>
            </el-table>

            <!-- 分页区 -->
                <el-pagination
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
                :current-page="queryInfo.pagenum"
                :page-sizes="[ 1, 3, 5, 10]"
                :page-size="queryInfo.pagesize"
                layout="total, sizes, prev, pager, next, jumper"
                :total="total">
    </el-pagination>
        </el-card>

        <!-- 添加用户的对话框 -->
<el-dialog
    title="添加用户"
    :visible.sync="addDialogVisible"
    width="50%"
    @close = "addDialogClose"
    >
    <!-- 主体内容区域 -->
    <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
    <el-form-item label="用户名" prop="username">
    <el-input v-model="addForm.username"></el-input>
    </el-form-item>
    <el-form-item label="密码" prop="password">
    <el-input v-model="addForm.password"></el-input>
    </el-form-item>
    <el-form-item label="邮箱" prop="email">
    <el-input v-model="addForm.email"></el-input>
    </el-form-item>
    <el-form-item label="手机" prop="mobile">
    <el-input v-model="addForm.mobile"></el-input>
    </el-form-item>
    </el-form>
    <!-- 底部区 -->
    <span slot="footer" class="dialog-footer">
    <el-button @click="addDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="addUser">确 定</el-button>
    </span>
</el-dialog>

        <!-- 修改用户的对话框 -->
        
<el-dialog
    title="修改用户信息"
    :visible.sync="editDialogVisible"
    width="50%"
    @close="editDialogClosed"
    >
    <el-form :model="editForm" :rules="editFormRules" ref="editFormRef" label-width="100px">
    <el-form-item label="用户名">
    <el-input v-model="editForm.username"
    ></el-input>
    </el-form-item>
    <el-form-item label="邮箱" prop="email">
    <el-input v-model="editForm.email"
    ></el-input>
    </el-form-item>
    <el-form-item label="手机" prop="mobile">
    <el-input v-model="editForm.mobile"
    ></el-input>
    </el-form-item>
    </el-form>
    <span slot="footer" class="dialog-footer">
    <el-button @click="editDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="editUserInfo">确 定</el-button>
    </span>
</el-dialog>

<!-- 分配角色的对话框 -->
<el-dialog
    title="分配角色"
    :visible.sync="setRoleDialogVisible"
    width="50%"
    @close="setRoleDialogClosed">
    <div>
    <p>当前用户: {{userInfo.username}} </p>
    <p>当前角色: {{userInfo.role_name}} </p>
    <p>
    <el-select v-model="selectedRoleId" placeholder="请选择">
    <el-option
        v-for="item in rolesList"
        :key="item.id"
        :label="item.roleName"
        :value="item.id">
    </el-option>
    </el-select>
    </p></div>
    <span slot="footer" class="dialog-footer">
    <el-button @click="setRoleDialogVisible = false">取 消</el-button>
    <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
    </span>
</el-dialog>
    </div>
</template>

<script>
export default {
    data() {
        //验证邮箱的规则
        var checkEmail = (rule, value, cb) => {
            const regEmail = /^([a-zA-Z0-9_-])+@([a-zA-Z0-9_-])+(\.[a-zA-Z0-9_-])+/

            if (regEmail.test(value)) {
                //合法的邮箱
                return cb()
            }
            cb(new Error('请输入合法的邮箱'))
        }
        //验证手机号的规则
        var checkMobile = (rule, value, cb) => {
            const regMobile = /^(0|86|17951)?(13[0-9]|15[012356789]|17[678]|18[0-9]|14[57])[0-9]{8}$/
            // 验证手机号的正则表达式
            if (regMobile.test(value)) {
                return cb()
            }
            cb(new Error('请输入合法的手机号'))
        }
        return {
            // 获取用户列表的参数对象
            queryInfo: {
                query: '',
                // 当前的页数
                pagenum:1,
                //当前每页显示多少条数据
                pagesize:2
            },
            userlist: [],
            total: 0,
            // 控制添加用户对话框的显示和隐藏
            addDialogVisible:false,
            // 添加用户表单
            addForm:{
                username:'',
                password:'',
                email:'',
                mobile:''
            },
            // 添加用户表单的验证对象
            addFormRules: {
                username: [
                    { required: true, message:'请输入用户名',
                    trigger: 'blur'},
                    { min: 3, max: 10,
                    message:'用户名的长度在3~10个字符之间',
                    trigger:'blur'}
                ],
                password: [
                    { required: true, message:'请输入密码',
                    trigger: 'blur'},
                    { min: 3, max: 10,
                    message:'用户名的长度在5~15个字符之间',
                    trigger:'blur'}
                ],
                email: [
                    { required: true, message:'请输入邮箱',
                    trigger: 'blur'},
                    {validator: checkEmail,trigger: 'blur'}
                ],
                mobile: [
                    { required: true, message:'请输入手机号',
                    trigger: 'blur'},
                    {validator: checkMobile,trigger: 'blur'}
                ],
            },
            // 控制修改用户对话框的显示与隐藏
            editDialogVisible: false,
            // 查询到的用户信息对象
            editForm: {},
            // 修改表单的验证对象
            editFormRules: {
                email: [
                    {required: true, message:'请输入用户邮箱',
                    trigger: 'blur'},
                    {validator: checkEmail,trigger: 'blur'}
                ],
                mobile: [
                    {required: true, message:'请输入用户手机号',
                    trigger: 'blur'},
                    {validator: checkMobile,trigger: 'blur'}
                ],
            },
            // 控制分配角色对话框的显示与隐藏
            setRoleDialogVisible: false,
            // 需要被分配角色的用户信息
            userInfo:{},
            // 所有角色的数据列表
            rolesList: [],
            // 已选中的角色Id值
            selectedRoleId: '',
        }
    },
    created() {
        this.getUserList()
    },
    methods: {
        async getUserList() {
        const { data: res } = await this.$http.get('users', {
                params: this.queryInfo 
                })
        if (res.meta.status !== 200) {
            return this.$message.error('获取用户列表失败！')
        }
        this.userlist = res.data.users
        this.total = res.data.total
            console.log(res);
        },
        // 监听 pagesize 改变的事件
        handleSizeChange(newSize) {
            // console.log(newSize);
            this.queryInfo.pagesize = newSize
            this.getUserList()
        },
        // 监听 页码值 改变的事件
        handleCurrentChange(newPage) {
            // console.log(newPage);
            this.queryInfo.pagenum = newPage
            this.getUserList()
        },
        //监听switch开关状态的改变
        async userStateChanged(userinfo){
            console.log(userinfo);
        const { data: res } = await this.$http.put(`users/${userinfo.id}/state/${userinfo.mg_state}`)
        if (res.meta.status !== 200) {
            userinfo.mg_state = !userinfo.mg_state
            return this.$message.error('更新用户状态失败！')
        }
        this.$message.success('更新用户状态成功！')
        },
        // 监听添加用户对话框的关闭事件
        addDialogClose() {
                this.$refs.addFormRef.resetFields()
        },
        // 点击按钮，添加新用户
        addUser() {
            this.$refs.addFormRef.validate(async valid => {
                if (!valid) return
                //考研发起添加用户的网络请求
                const {data: res} = await this.$http.post('users', this.addForm)
                if (res.meta.status !== 201) {
                    this.$message.error('添加用户失败')
                }
                    this.$message.success('添加用户成功')
                    // 隐藏添加用户的对话框
                    this.addDialogVisible = false
                    // 重新获取用户列表数据
                    this.getUserList()
            }) 
        },
        //展示编辑用户的对话框
        async showEditDialog(id) {
            const { data: res} = await this.$http.get('users/'
            + id)

            if (res.meta.status !== 200) {
                return this.$message.error('查询用户信息失败！')
            }

            this.editForm = res.data
            this.editDialogVisible = true
        },
        // 监听修改用户对话框的关闭事件
        editDialogClosed() {
            this.$refs.editFormRef.resetFields()
        },
        // 修改用户信息并提交
        editUserInfo() {
            this.$refs.editFormRef.validate(async valid => {
                if (!valid) return
                // 发起修改用户信息的数据请求
                const { data: res} = await this.$http.put('users/' + this.editForm.id, {
                    email: this.editForm.email, 
                    mobile: this.editForm.mobile
                    })
            

            if (res.meta.status !== 200) {
                return this.$message.error('更新用户信息失败!')
            }

            // 关闭对话框
            this.editDialogVisible = false
            // 刷新数据列表
            this.getUserList()
            // 提示修改成功
            this.$message.success('更新用户信息成功!')
            })
        },
        // 根据id删除对应的用户信息
        async removeUserById(id){
            // 弹框询问用户是否删除数据
            const confirmResult = await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
            confirmButtonText: '确定',
            cancelButtonText: '取消',
            type: 'warning'
        })
        .catch(err => err)
        // 如果用户确认删除，则返回值为字符串 confirm
        // 如果用户取消了删除，则返回值为字符串 cancel
        // console.log(confirmResult);
        if (confirmResult !== 'confirm') {
            return this.$message.info('已取消删除')
        }
        const {data : res }=await this.$http.delete('users/' + id)
                if (res.meta.status !== 200) {
                    return this.$message.error('删除用户失败!')
                }
                    this.$message.success('删除用户成功!')
                    this.getUserList()
        },
        //  展示分配角色的对话框
        async setRole(userInfo) {
            this.userInfo = userInfo

        // 在展示对话框之前，获取角色的所有列表
            const { data : res } = await this.$http.get('roles')
            if (res.meta.status !== 200) {
                return this.$message.error('获取角色列表失败！')
            }
            this.rolesList = res.data
            this.setRoleDialogVisible = true
        },
        // 点击按钮，分配角色
        async saveRoleInfo() {
            if (!this.selectedRoleId) {
                return this.$message.error('请选择要分配的角色！')
            }

            const {data: res} = await this.$http.put(`users/${this.userInfo.id}/role`, {
                rid:this.selectedRoleId
            })

            if (res.meta.status !== 200) {
                return this.$message.error('更新角色失败！')
            }

            this.$message.success('更新角色成功！')
            this.getUserList()
            this.setRoleDialogVisible = false
        },
        // 监听分配对话框的关闭事件
        setRoleDialogClosed(){
            this.selectedRoleId= ''
            this.userInfo={}
        }
    },
}   
</script>

<style lang="less" scoped></style>
